Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-50
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 250mm stroke, G1/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ32 mm
- Stroke250 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-50
The AirTAC SAIJ32X250-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 402N of push force at 0.5 MPa. It features an extruded aluminum barrel with sensor grooves on both sides and a SUS304 stainless steel rod for superior corrosion resistance. By turning the rear screw, you achieve a usable travel window of 200-250 mm, enabling precise end-position tuning without swapping hardware.
This 32mm bore unit utilizes a PT G1/8 port and variable air cushions at both ends to decelerate the load smoothly. The rear stopper sets the retract position but does not lock the load without live air pressure. For load-holding requirements without continuous air, consider the SAIL or BSAI series instead.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-50 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 250 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×250 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-50 Is Used
End-Stop Calibration
Dial in the exact retract distance within the 200-250mm window during machine commissioning to perfect positioning without machining new hard stops.
Product Changeover
Quickly adjust the stroke by up to 50mm on packaging lines when switching to a different product size, minimizing downtime between runs.
Fixture Alignment
Fine-tune the clamping reach on machining fixtures where the raw material thickness varies slightly, ensuring consistent contact pressure.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-50 the Right Cylinder?
Choose this adjustable model when your machine setup requires dialing in a specific end-stop during commissioning or product changeovers, rather than relying on a fixed-stroke SAI cylinder. If your application demands higher thrust, stepping up to the 40mm bore yields 628N of push force at 0.5 MPa. Conversely, if space is tight and force requirements drop, a 25mm equivalent might suffice.
Because this 250mm stroke exceeds 300mm? No, but at 250mm it sits near the threshold where side-loading becomes a concern; ensure adequate external guiding to protect the 12mm rod and M10x1.25 thread. This SKU is dimensionally interchangeable per ISO 15552. To match this replacement exactly, verify the 32mm bore, 250mm nominal stroke, 50mm adjustment range, PT G1/8 port, and the SUS304 (B) rod material. Note that SAIJ supports a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX250-50 FAQ
At 0.5 MPa operating pressure, this 32mm bore cylinder provides 402N of push force and 345N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 82 kgf.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the effective travel from the 250mm nominal stroke down to 200mm. This creates a 200-250mm usable window for fine-tuning the end position at commissioning.
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